bonj said:
why can't they just make the hay on the same farm that the horse lives and save all that bother? Or better still, why can't the horse just eat grass and apples?
and they don't NEED fertiliser, horses survived perfectly well for hundreds of years before it was invented.
The grass grows far faster than can be grazed in that size of field in the summer and is either turned by the farmer into silage for his cattle or hay which he sells to us or at the market usually around may or june, and then in september for the winter.
The rule of thumb is one horse in one acre of grazing. I keep 2 in a 5 acre field, and they have mostly grazed it down over the winter. I think if push came to shove, then we could have had another animal in the 5 acres, but the grass and ground under it would have been fairly buggered by the end of the winter, and the horses would drop their condition (starve) between Christmas and March/April. Hay is the best of the grass at the peak of its growing cycle with all of the goodness this brings, and that is why it is cut at specific times and kept when either the grass in the field has been grazed down, or the animals have to be brought off to avoid turning them to quagmires.
As for fertilizer, the farmer was harrowing our field this evening to get rid of the dung. He will do this a few times a year and this helps aerate the soil and saves us having to poo pick a very large area.